Automobile tire-pump.



F. E. CARLSON.

AUTOMOBILE TIRE'PUMP. APPLIQATION- FILED 00124, 19,10.

P. E. GARLSGN. AUTOMOBILE TIRE PUMP. APPLIUATION ruim 00T. 24, 1910.

15,005,690. 4fwn-,emma oet. 10,1911.

2 sinn-SHEET 2.

` srArns-TENT onirica. f

E. CARLSON, or enfonce, rumors.

AUTOMOBILE TIRE-Primi?.

1,005,690* i .l specification uieaersratent. Patented oct, 10, 1911,: lApplication mea october 24,1910. sriai No. 588,711.

- piston 2 is provided with an ordinary cup To'all concern: l i Be it known that Ig-Flnirur4 E. CARLsoN, a shaped flexible leather packing 6, which fits i A citizen of the United States, and aresident of the cylinder wall closely during the workthe city of Chicago, county of Cook, and ing stroke of the piston but is' forced slightly '30 5 State of Illinois, have invented certainnew -therefrom by the inrush of air durin Lthey and useful Improvements in Automobile admission stroke, the air flowing eel `Tire-Pumps, of which the following is a through the peripheral notches 2 as`v hereinspecification. p. w before stated. Arranged centrally in the cyl- My invention relates toimprovements in inder wall is a series `of air intake openings 05 automobile tire pumps ofthe'classlwhich are =7,' the pistons 2 being adapted to register I y adapted to be driven by a rotative element of with sa1d openings when at the limit of their the automobile motor. out-strokes. l

lThe object of my invention is to providea 1 When air is compressed in the right end fi.

. tire pump which shallbe simple of construcof the cylinder 1 as illustrated in Fig. 2, the 70 tion, strong. and durable, and eiiicientin op- Vsame flows throughthe passage 8 past the 'l eration. ,ball check valve 9 formed, in theplug 10, and 'My invention consists in the novel conl thence Vthrough the pipe 11 and past the-ball struction and arrangements of parts'as will check valve l2 to the delivery nozzle 13 to be hereinafter fully described and more par- @which is attached a suitable hose, not shown. 75 ticularly pointed out in the appended claims. 'g Surrounding the intake ports 7 is a ring 14 My invention will be best understood by lgcarrying an oil cup 15 which is screwed into A reference to 'the accompanying .drawings the threaded boss 16 as clearly illustrated in forming'a 'part of'this speciication, and 1n ig. 8. The ring 14 is provided with an inwhich-- l I y f' 'g'ternal circular groove 17 and with a pair of 80 Figure 1 -s a side elevation of my imedepe'nding lugs 18. Said ring is clamped.'

proved tire pump in its preferred form, Fig. @to the cylinder 1 by means of a screw 19 v 2 is a sectionalelevation thereof, Fig. 3 is a l.passing through the lugs 18 as shown in Fig. longitudinal' section showing the means for i 8.l From this construction it is clear that oil reciprocating the pump pistons, Fig. t is a Venteri-'ng through the oil cup 15 will flow 85 v detail longitudinal section, Figs. 5 and 6 are downwardly over the sides of the'cylinder' detailelevations, Fig. 7 is a. detail longitudi- ,and be drawn thereinto through the ports 7 nal section, andFig. 8 is a detailtransverse by means Iof the suction of the pistons. f

section.- I In .orderthat air entering the cylinder 1 The 4preferred construction for carrying Qthroughthe ports .7 maybe freed of dust 90 35 my invention into eifect as illustrated in the or other foreign particles arcuate slots 20 accompanying drawingscomprises a cylin- .are provided-in the ring 14 andv covered by der -1 and a tubular casing 1 vconnected l=strips of wire gauze 21 as clearly illustrated thereto, the latter inclosing a portion of the in the'several views..

piston-rod mechanism. Pistons 2 are pro- In order to prevent leakage of. air past .95

vided in eachend of the cylinder 1 and the {the piston-rod 4 a stuing bo-Xgfis provided v same have a series of peripheral notches 2 .comprising a threaded boss 22. The opening to permit of the free flow of air into the com- @23 lof the stuffing box is provided with a pression 'space of the cylinders. r The pisaplug or cap 24 as illustrated in Fig. 3. The

tons 2 are spaced apart and held in permai tubular casing 1 is provided with diametri- 1,00 nent relation -t'o each other by `means of a cally opposite longitudinal slots 25 inwhich rod 3. `The rigid connection thus formed `a. diametric pin 26 vis adapted topreciprocate. between the pistons 2 cause the same to'move- 4Said lpin is passed through the sleeve 5 and synchronously, it being apparent that when. piston-rode and is adapted to prevent these one piston is performing its working'stroke pajrts frcm rotating during thereciprocation 105 5o that the other is admitting airfto its respecthereof. The sleeve 5 1s provided with retive portion'of the cylinder. A piston-rod el versely-disposed helical, grooves 28 which is arranged in axial alinement with the' pis- 'hterminate in common circular paths .29. as tons 2 and rod 3 and extends into the. space Aillustrated in Figs. 3 and 4. Traversmg inclosed b the casing 1'.' Piston-rod 411s said grooves'. and paths is an oscillatory dog im surrounde 'by a sleeve 5 the purpose of 30 having bifurcate'd ends 31 as shown in which will be described hereinafter. Each detailin lzigs.v 5 and 6. The dog 30 1S mounted in a two-part rotatable casing 32,

ing 32 is driven by a spur gear 35 which is,

pressed thereon or secured thereto in any desirable manner., An oil well 36 is provided in the casing 32 diametrically opposite the dog 30, said oil wel-l being provided with an oil hole 37 for the introduction of oil. By this means the operative mechanism is lubricated. A housing 38 inclosing the casing 32 is Screwed into one end of the casing l as clearly illustrated in Fig. 3. The housing 38 is supported by a casting 39 which is connected thereto by means of 'screws 40, the latter entering lugs 4:1 as clearly shown in Fig. l. l

The operation ofthe piston-rod actuating mechanism is as 'y follows The casing 38 carrying the oscillatory dog 3() isladapted to have a uniform rotation-by means of the gear mounted thereon. Since the bifurcated ends of the dog project into the helical grooves 27 and 28 the piston-.rod 4 must reciprocate, said bifurcated ends assuming a. wire one angle when said pistn-rod is moving in one direction and another angle when said piston rod is moving in the opposite direction. On reaching the end of a helical groove the bifurcated ends are turned to the opposite angle by the influence of the curved path 29, this movement being shown in Fig. 4C.

A tire pump of the construction set forth is simplev of construction and eiiicient in operation. y

While I have shown what I deem to be the preferable form of my improved tire pump I do not wish to be limited thereto as there might be various changes made in the .ar-

rangements of parts described and details of construction without departing from the spirit of the invention as comprehended within the scope ofithe appended claims.

Having describe my invention what I claim as new and desire to secure by Letters Patent is:4

1. A tirepump comprising an air cylinder having .an intake opening in its central portion, spaced pistons operating in said cylinder at each side of said opening, a ringvsurrounding said cylinder over said opening, said ring being grooved on its inner side and provided with an intake opening leading to said groove, and gauze covering for the opening in said ring, substantially as described.

'said piston ro helical `grooves formed therein terminatingl 2. A tire pump comprising an air cylinder, spaced pistons provided in said cylinder and adapted toV move in synchronism therein, a series of intake ports arranged centrally in said cylinder, peripheral notches and flexible packing means provided :on said pistons, means for delivering air and preventing the return flow of the same to said cylinder, means for reciprocating said pistons, a ring secured to said cylinder over said port-sand provided with an internal circular groove, openings in said ring lead-y ing 'to said groove,'and wire gauze coverings for saidvopenings, substantially as described.

3. A tire pump comprising a cylinder, spaced pistons in said cylinder adapted'to move in. synchronism, a series of spaced intake ports arranged in said cylinder, peripheral notches ,and flexible packing means provided on said pistons, means for delivering air and preventing the return flow of the same to said cylinder, means for reci-procating said pistons, a ring secured to said cylinder'y over said ports and provided with an internal circular groove, arcuate slots in said ring leading to said groove, wire gauze coverings for said openings, and an oil-cup secured in said ring and communicating with said annular groove, substantially as l described.

4f. A tire pump comprising. an air cylinn der, spaced pistons provided in said cylinder and adapted to move in synchronism therein, a series of intake ports arranged centrally in said cylinder, peripheral notches and iiexible packing means provided on said pistons, means for'delivering air and preventing the return of the same to said cylinder, means for reciprocating said pistons comprisink a piston rod, aisleeve on having reversely disposed in common curved paths, an oscillatory dog traversing said grooves and. paths, means for revolving said dog, a ring secured to said cylinder over said ports and provided with an internal groove, openings in said ring leading to said groove, and wire gauze coverings for said openings, substantially as described.

In testimony whereof I have signedmy name to this speciiication in the presence of two subscribing witnesses.

FRANK n. CARLSON.

Witnesses :l f i FLORENCE E. LILLis, JOSHUA R. Porre.l 

